U12
T-fal Lid Not Locked Under Pressure / Pressure Drop Detected

U12 code appears, often indicating lid or pressure issues during cooking.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Lid not fully locked, Worn lid lock mechanism, Steam leak at lid gasket, Faulty lid lock sensor

How to Fix / Troubleshooting

Safety first: If U12 appears during cooking, allow the cooker to cool and depressurize before opening.

Checks:

  • Verify that the lid is closed in the correct orientation and fully turned/latched as per the user manual.
  • Inspect the lid lock pin for free movement and clean any residue.
  • Check the silicone gasket and replace if worn.
  • Confirm that the steam release valve is not stuck partially open.

If mechanical parts are in good condition, the lid lock sensor or pressure sensor may be misreading and require professional service.

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Repair Difficulty

Medium 3/5

Required Part

Lid Lock Assembly
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